Paper-creasing machine.



No. 798,725. PATENTED SEPT. 5, 1905. A. B. FARNHAM & M. G. POND.

PAPER GREASING MACHINE.

APPLICATION FILED JAN. 24, 1905.

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No. 798,725. PATENTED SEPT. 5, 1905. A. B. FARNHAM 6: M. G. POND.

PAPER GREASING MACHINE.

APPLICATION FILED JAN. 24, 1905.

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No. 798,725. PATENTED SEPT. 5, 1905. A. B. FARNHAM & M. G. POND.

PAPER OREASING MACHINE.

APPLICATION FILED JAN. 24, 1905.

3 SHEBTBSHEET 3.

UNITED STAT SS PATENT OFFICE.

ARTHUR B. FAItNIIAM AN I) MEliltIll'l (I. .IONI), ()F MINNEAPOLIS,

M II N ES UTA.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed January 24, 1905. Serial No. 242,525.

To a]! 'Ir/mnt it may concern.-

Be it known that we, ARTHUR B. Fanxuau and MmutITT G. POND, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Paper- Creasing Machines, of which the following is a specification.

The object of our invention is to provide a machine for creasing or scoring the leaves of stiff ledger-paper and heavy book-paper to break without cutting the fiber, so that the leaves when made into a book will bend freely or hinge at the point of creasing and turn open either way and remain open or flat while the book is in use.

The invention consists generally in a fixed die having a corrugated surface and a series of movable dies adapted to fit into the corrugations of said fixed die and crease the paper laid between them.

In the accompanying drawings, forming part of this specification, Figure 1 is a front elevation of a paper-creasing machine embodying our invention. Fig. 2 is a side elevation, partially in section, of the upper portion of the machine. Fig. 3 is a vertical transverse sectional view of the fixed and movable dies, showing the latter in their raised position. Fig. i is a similar view showing a portion of the dies depressed and engaging the fixed die. Fig. 5 is a detail view of the mechanism for adjusting the movable die-holder with respect to the fixed die.

In the drawings, 2 represents a suitable frame having a bed or feed-table 3, on which the sheets of paper to be creased are laid.

4 represents the fixed die, having a series of longitudinal corrugations 5 and fitting within a recess or socket in the machine-frame, the top of the die being on a level with the surface of the feed-table 3. Above the fixed die is a movable die-holder 7, carried by a yoke 8, that is vertically slidable on pins 9 at each end of the machine'frame. The movable dieholder is provided with depending flanges 10, between which a series of fiat plates 11, 12, 12), 14, 15, 16, and 17 are arranged and provided with wedge-shaped lower edges to fit into the corrugations in the fixed die beneath. The die 17 is rigidly secured by setscrews 18 to one of the flanges of the die-holder, and the other dies are provided near each end with transverse slots 19, which gradually decrease in length in the successivedies and are adapted to receive pins 20, that are supported at their ends in the flanges 10. The slots in the die 11 are longer than those in the other dies, and consequently this die will be allowed to drop down to a position nearer the lixed die, and the slot in the die 12 being longer than those in the succeeding dies it will be allowed to depend to a point below the wedge-slniped edges of such succeeding dies, as indicated in Fig. 3. The result of this arrangement is that the die 11 will first contact with the fixed die and make the lirst crease or score in the paper. Then the die 12 will engage the paper and make the second crease, and so on until the desired number of creases have been formed. As the dies engage the paper successively instead of simultaneously, the paper will be drawn from the ends when the first die contacts therewith and from one end only thereafter, resulting in the creasing or scoring of the paper without cutting or tearing the same, which would certainly result if all the movable dies engaged the paper simultaneously. The number of creases made in the paper will depend upon the size of the sheet, the thickness of the paper, and the width of the binding. In some books there will be more room for the creasing than in others, and the number of creases can be varied accordingly. The vertical zuljustment of the die-holder will regulate the number of movable dies that engage the fixed die with each stroke. The mechanism for adjusting the dieholder will be described hereinafter.

It is desirable in a machine of this kind to provide some means for drawing down the movable dies with a yielding tension to hold them in their proper relative position. \Ve therefore provide brackets 21, havingthreauled shanks to enter arms 22 and provided with tluunb-1mts23, by means of which the brackets can be vertically adjusted. Iins 21 adjustably connect the brackets with springs 25, that are connected at their upper ends to the ends of the movable dies, respectively, by rods 20. By adjusting the brackets the operator can increase or decrease the tension of the springs simultaneously, and by means of the pins QI each spring can be adjusted independently of the others. These springs serve to hold the movable dies in the position shown in Fig. 3 and allow them to yield and bear on the paper with a yielding pressure when they are moved down to engage the fixed die.

Upon each side of the machine we provide threaded rods 27, carrying pinions 28, that fare mounted on said rods, in boxes 29 on the ends of the yoke 8. A shaft 30 is provided near each end with a thread 31, that engages the gear 28. An operating-wheel 32 is provided on said shaft, by means of which it may be revolved and the rods 27 simultaneously raised or lowered to lift or depress the yoke 28 and move the die-holder nearer the fixed die or separate them.

The power for raising and lowering the dieholder is transmitted to the yoke 8 through the rods 27, and the mechanism that we prefer to employ for this purpose consists of connecting-rods 33, pivoted to the lower ends of the rods 27 and driven from cams 3th on a shaft 35. A continuously-operating pulley 86 is provided on said shaft, having a clutch connection 37 therewith. A rock-shaft 38 is provided with an arm 39, that engages said clutch and normally holds it out of engagement with said pulley. A treadle 4:0 is provided on the shaft 38, and when the said shaft is rocked and the treadle depressed against the tension of the spring Al the clutch 37 will be released, the pulley locked on the shaft, and the machine set in' motion. As soon, however, as the shaft has made a complete revolution the arm 39, having been returned to its normal position by the spring 40, will engage and trip the clutch, releasing the pulley, which will run free until the treadle is again depressed.

The sheets of paper to be creased are laid on the table with one end over the fixed die, and as the movable dies descend the paper is forced into the corrugations of the fixed die and a series of transverse creases formed therein, the number depending upon the position of the die-holder with respect to the fixed die. The paper having been creased on one side is turned over and the operation repeated, so that the sheet will bend freely in either direction. After the creasing operation is completed the sheets are passed between rolls which flatten out the creases, so that the sheets will lie evenly and closely upon one another.

WVe claim as our invention 1. The combination, with a fixed die provided in its upper surface with a series of corrugations, of a plurality of movable dies supported above said fixed die and arranged to be successively forced down upon the paper resting upon said fixed die and press it into the corrugations therein, substantially as described.

2. The combination, with a fixed die provided with a series of corrugations in its upper surface, of a plurality of movable dies supported above said fixed die and arranged to successively engage the paper resting upon said fixed die and force it into said corrugations, and means for yieldingly drawing said -movable dies toward said fixed die, substantially as described.

3. The combination, with a fixed die, of a plurality of movable dies arranged to successively engage the paper resting upon said fixed die, and means for adjusting said movable dies with respect to said fixed die, for the purpose specified.

4. The combination, with a fixed die having a corrugated surface, of a plurality of movable dies arranged to successively cooperate with said fixed die to crease or score a sheet of paper placed between them, and means for adjusting said movable dies to regulate the number contacting with said fixed die, substantially as described.

5. The combination, with a fixed die, of a die-holder suspended above the same, a fixed die m )unted in said holder, and a plurality of movable dies also carried by said holder and arranged to successively engage a sheet of paper and force it down upon said first-named fixed die, said movable dies engaging the paper successively, and said second-named fixed die being the last of the series to contact with the paper, substantially as described.

6. The combination, with afixed die, of a die-holder, a series of plates carried thereby and provided with transverse slots which gradually increase in length from one end of the series of dies to the other, pins provided in said holder and passing through said slots and supporting said movable dies, and means for drawing said dies down with a yielding tension.

7. The combination, with a fixed die, of a die-holder, a series of plates suspended therein and having lower edges adapted to contact with said die and successively engage the same, and springs connected with said plates and exerting a downward tension thereon, substantially as described.

8. The combination, with a table provided with a fixed die, of a yoke vertically slidable above said table, a die-holder carried by said yoke, a series of movable dies carried by said holder and adapted to successively engage the paper resting upon said fixed die, and means for raising or lowering said yoke and holder to increase or decrease the number of movable dies engaging the paper, substantially as described.

9. The combination, with a frame, of pins or standards mounted thereon, a yoke vertically slidable on said pins, a die-holder carried by said yoke, a series of movable dies carried by said holder, a fixed die arranged beneath said movable dies, threaded rods connected with said yoke, and a shaft having an operating-wheel, and wormgears connected with said rods to raise or lower the same, means for operating said rods to elevate or depress said yoke, substantially as described.

10. In a paper-creasing machine, a dieholder provided with aseries of independentlyl ed above the same, a series of plates arranged movable dies arranged to successively contact with the paper, a tension mechanism for said dies, and means for regulating the tension of all the dies simultaneously or each one independently of the others.

11. In a paper-creasing machine, a dieholder provided with a series of independentlymovable dies arranged to successively contact with the paper, a tension mechanism for said dies, and means for simultaneously changing the tension of all the dies, substantially as described.

12. The combination, with a fixed diehaving a corrugated surface, of a vertically-movable die-holder and a series of movable dies slidably mounted in said holder, each die having a wedge-shaped edge to enter the corrugations in said tixed die, and said movable dies successively contacting with said fixed die, for the purpose specified.

13. The combination, with a tixed die having a corrugated surface, of a die-holder supportin said holder and having edges to coincide with said corrugations, and said plates being movable in said holder and arranged to successively contact with a yielding pressure with the corrugations of said lixed die, substantially as described.

l t. The combination, with a base provided with a feed-table, of a flat fixed die having a corrugated upper surface mounted in said base, a 'ertically-movable die-holder sup ported above said fixed die, and a series of movable 35 dies carried by said holder and arranged to successively enter the corrugations in said lixed die, substantially as described.

In witness whereof we have hereunto set our hands this 21st day of January, 1905.

ARTHUR .B. FARNHAM. MERRITT G. POND.

\Vitnesses:

RICHARD PAUL, (J. MACNAMARA. 

